Make sure to study for your exam throughout the entire semester. It is much better for the brain to gain knowledge gradually over a longer period of time.

Study for your exam in an environment that is similar to where the exam will take place. It is easier to recall something once you have learned it in an environment that resembles the environment in which it will be used.

Give presentations. When you have to explain your knowledge to others, it is easier to discover any gaps and/or uncertainties in your arguments and explanations.

Get a good night's sleep. Sleep is essential for your memory as the brain does memory consolidation when you are asleep. This allows the brain to remove unnecessary information and associate the new information with some existing knowledge.

Take a nap. A short 20-30 minute nap in the afternoon can help with the learning you had prior to the nap.